SOLID STATE RECORDING VOLTMETER
The LM750 is a rugged battery operated data recorder which may
be used to monitor and record voltages up to 750 Vac.
FEATURES:
Two input voltage ranges
Wide Temperature operation
Weatherproof enclosure for outdoor use.
Long battery life
3 1/2 Digit LCD display
1 second input sampling.
Safety fused leads included
Padded pouch with pole
mounting straps
Includes data retrieval and
presentation software.
Front panel switches for field initialization
TORONTO, ONTARIO
LOGMASTER LM750 SPECIFICATIONS
Lo: 0 - 200.0 V
Hi: 0 - 750 V
Accuracy:
Lo: (1% of rdg. ±0.2) V
Hi: (1% of rdg. ±1) V
Resolution:
Lo: 0.2 V
Hi: 1 V
Maximum Voltage: 750 Vac
Stored Data:
Average Mode - Average of all samples taken once
per second during the specified period.
Average/Minimum/Maximum Mode - 3 readings
stored per period; average as above,
also the minimum and maximum
voltage values which occurred during
this period.
Voltage Ranges:
The LM750 is a rugged voltage recorder which may
be used to investigate customer voltage complaints indoors, or
monitor pole top distribution voltages in all weather conditions.
The voltage inputs are sampled once per second. The LM750
will record the average of these samples over a user selected
interval of 1, 5, or 15 minutes. If the user selects Minimum,
Maximum, Average mode, the minimum and maximum voltage
detected during the interval will also be retained in memory.
The recorder may be configured to record continuously, or
stop recording when the memory has become full.
Using a Logmaster LMI-1 or LMI-2 serial computer
Interface and the EG2000V windows software supplied with the
LM750, the contents of the recorder may be downloaded to a
personal computer. Once downloaded, the user may view the
data in a high resolution graphical format, analyze, and attach
Memory Modes:
Stop - Records until memory is filled
Continuous - When memory filled, new data
overwrites old (wraparound).
Data Capacity:
Rec Int.
Data Mode
Days Storage
15 min
Avg
66*
5 min
Avg
22
1 min
Avg
4.5
15 min
Avg/Min/Max
22
5 min
Avg/Min/Max
7.5
1 min
Avg/Min/Max
1.5
Batteries:
(2) Standard 9V Alkaline.
Temperature Range: -40 C to +55 C
Weight:
1.7 lb (0.8 Kg)
Dimensions:
19 x 8.1 x 5.5 cm.
comments or notes to the data file. Multiple LM750's may be
used to combine and analyze multi-phase voltages, or compare
time coincident data files collected from different locations of a
distribution circuit.
A demonstration version of EG2000 is available to
download on our web site at www.broy.com. The demo
package includes some sample data files which you may load
and view using EG2000. Operating the demo program
with sample files is an effective way to become more familiar
with the features and capabilities of the Logmaster LM750.
The LM750 comes complete with safety fused leads,
data analysis software, and a padded carrying pouch. The
padded pouch includes adjustable straps and hooks so that it
may be securely attached to a powerline pole and left outdoors
to collect data.
92 Advance Road, Toronto, Ontario M8Z 2T7
Telephone (416) 231-5535 FAX (416) 231-6184
E-MAIL: logmaster@broy.com
www.broy.com